치과용 Co-Cr 금속도재관의 표면처리에 의한 도재와의 결합 강도 분석
Analysis of the bonding strength according to surface treatments of dental Co-Cr alloy for porcelain fused to metal
박희근, 박원욱, 조경명, 황규홍,
소속 상세정보
박희근 ( Park Hee-Geun ) - 진주보건대학교 치기공과
박원욱 ( Park Won-Uk ) - 진주보건대학교 치기공과
조경명 ( Zhao Jin-Ming ) - 경상대학교 나노신소재공학부
황규홍 ( Hwang Kyu-Hong ) - 경상대학교 나노신소재공학부
KMID : 0362120160380030175
Abstract
Purpose: Observation of Oxide Film Formation and Bonding Strength according to surface treatment of Co-Cr Alloy for porcelain fused to Metal.
Methods: metal specimens 0.5㎜×25㎜×4㎜ in size were made using Co-Cr alloys for porcelain fused to metal crown (Heraenium P, Tae jung Medis). Dental porcelain 0.5㎜×25㎜×4㎜ in size was sintered on the metal specimens after changing the etching time, sandblasting condition, and heat treatment temperature. Subsequently, the bonding strength was compared by the three-point flexural strength test using a universal testing machine (UTM) to observe the fracture surface and oxidized layers.
Results: With regard to the experimental group treated with acid-etching, Specimen 1 treated for 25 minutes (B- 3) showed the highest bonding strength, and Specimen 2 treated only with sandblasting showed the most excellent bonding force at 3.5 bar (C-3). With regard to the experimental group treated with sandblasting at 3.5 bar after acid-etching for 25 minutes, Specimen 3 with heat treatment at 980℃ (D-3) showed the highest bonding strength.
Conclusion: The specimen which went through both sandblasting and etching, showed an excellent ceramicmetal bond strength.
키워드
Co-Cr Alloy; surface treatment; bond strength; sandblasting; etching
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